| Image Coa: | DEU Sierksdorf COA.svg |
| Coordinates: | 54.0667°N 56°W |
| Image Plan: | Sierksdorf in OH.png |
| State: | Schleswig-Holstein |
| District: | Ostholstein |
| Amt: | Ostholstein-Mitte |
| Elevation: | 6 |
| Area: | 19.5 |
| Postal Code: | 23730 |
| Area Code: | 04563 |
| Licence: | OH |
| Gemeindeschlüssel: | 01 0 55 039 |
| Website: | www.amt-ostholstein- mitte.de |
| Mayor: | Volker Weidemann |
Sierksdorf is a municipality in the district of Ostholstein, in Schleswig-Holstein, Germany, situated on the Bay of Lübeck. The Hansa Park amusement park is located in Sierksdorf.